# Duet Display vs ProofMate

The clearest difference is ads: ProofMate at none against Duet Display's shown. ProofMate also leads on update cadence (every 4 days vs every 3 weeks). Duet Display's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 18.0). On price and in-app purchases there is nothing between them.

Both are free to download. Duet Display sells 6 in-app purchases, starting at $3.99 per month and ProofMate sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Duet Display ships an update every 3 weeks, ProofMate every 4 days. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Duet Display | ProofMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (49K ratings)](https://appshunter.io/ios/app/duet-display/id935754064/reviews)** | — |
| Number of ratings | **49K** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 19 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duet, Inc.](https://appshunter.io/developer/935754063) | [Albert Castellvi](https://appshunter.io/developer/1895396285) |

## What reviewers say

### Duet Display

[App page](https://appshunter.io/ios/app/duet-display/id935754064)

Transform your iPad or iPhone into an advanced, lag-free extra display for your Mac or PC. Interact with your computer using touch and gestures, and unlock professional drawing capabilities with Apple Pencil support.

**Highlights:** Extra display for Mac & PC, Lag-free performance, Touch and gesture support, Apple Pencil integration, Professional drawing tools, Portable productivity

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duet Starter (Monthly) | $3.99 | per month |
| Duet Air (Monthly) | $5.99 | per month |
| Duet Pro | $7.99 | per month |
| Duet Starter (Annual) | $39.99 | per year |
| Duet Air (Annual) | $49.99 | per year |
| Duet Pro (Annual) | $79.99 | per year |

**What reviewers like**

- 🚀 Works seamlessly as a second screen
- 👍 Useful for productivity and multitasking
- 🎨 Great for artists and designers
- 💻 Extends desktop to iPad
- ⭐ Excellent customer support

**What reviewers complain about**

- 🐛 Connectivity issues and crashes
- 🔋 High battery consumption
- 🔒 Subscription model for full functionality
- 🔍 Confusing setup process
- 💸 Expensive for the features provided

**Reported bugs**

- Incompatibility with certain software and drivers
- Laggy performance and input delays
- Unreliable connection and frequent disconnects

**Requested features**

- Improved resolution and scaling options
- Better support for older devices and Windows
- More customization and control over settings
- Wireless connectivity without subscription


### ProofMate

[App page](https://appshunter.io/ios/app/proofmate-receipt-vault/id6764534034)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| ProofMate Pro | $28.99 | per year |
| ProofMate Pro Lifetime — Launch | $14.99 | one-time |
| ProofMate Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Duet Display free?

Duet Display is free to download, with in-app purchases available.

### Is ProofMate free?

ProofMate is free to download, with in-app purchases available.

### Do Duet Display or ProofMate have ads?

Duet Display shows ads; ProofMate does not.

### Which is updated more often, Duet Display or ProofMate?

Duet Display ships an update every 3 weeks, and ProofMate every 4 days. Most recently, Duet Display was updated on October 21, 2026 and ProofMate on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*